CN117881536A - Laminate, method for producing laminate, and tire - Google Patents
Laminate, method for producing laminate, and tire Download PDFInfo
- Publication number
- CN117881536A CN117881536A CN202280058816.2A CN202280058816A CN117881536A CN 117881536 A CN117881536 A CN 117881536A CN 202280058816 A CN202280058816 A CN 202280058816A CN 117881536 A CN117881536 A CN 117881536A
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- China
- Prior art keywords
- layer
- rubber
- laminate
- cyanoacrylate
- tire
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
Links
- 238000004519 manufacturing process Methods 0.000 title claims abstract description 15
- 239000010410 layer Substances 0.000 claims abstract description 109
- 239000004636 vulcanized rubber Substances 0.000 claims abstract description 57
- 239000000853 adhesive Substances 0.000 claims abstract description 54
- 230000001070 adhesive effect Effects 0.000 claims abstract description 54
- 229920001651 Cyanoacrylate Polymers 0.000 claims abstract description 46
- MWCLLHOVUTZFKS-UHFFFAOYSA-N Methyl cyanoacrylate Chemical compound COC(=O)C(=C)C#N MWCLLHOVUTZFKS-UHFFFAOYSA-N 0.000 claims abstract description 40
- 239000012790 adhesive layer Substances 0.000 claims abstract description 15
- 244000043261 Hevea brasiliensis Species 0.000 claims description 15
- 229920003052 natural elastomer Polymers 0.000 claims description 15
- 229920001194 natural rubber Polymers 0.000 claims description 15
- UCKMPCXJQFINFW-UHFFFAOYSA-N Sulphide Chemical compound [S-2] UCKMPCXJQFINFW-UHFFFAOYSA-N 0.000 claims description 13
- -1 alkyl cyanoacrylate Chemical compound 0.000 claims description 11
- 239000005062 Polybutadiene Substances 0.000 claims description 10
- 229920005549 butyl rubber Polymers 0.000 claims description 10
- 229920002857 polybutadiene Polymers 0.000 claims description 10
- 229920003049 isoprene rubber Polymers 0.000 claims description 8
- 229920000459 Nitrile rubber Polymers 0.000 claims description 7
- 229920005555 halobutyl Polymers 0.000 claims description 7
- 229920001084 poly(chloroprene) Polymers 0.000 claims description 7
- 229920003048 styrene butadiene rubber Polymers 0.000 claims description 7
- FGBJXOREULPLGL-UHFFFAOYSA-N ethyl cyanoacrylate Chemical compound CCOC(=O)C(=C)C#N FGBJXOREULPLGL-UHFFFAOYSA-N 0.000 claims description 6
- YRIZYWQGELRKNT-UHFFFAOYSA-N 1,3,5-trichloro-1,3,5-triazinane-2,4,6-trione Chemical compound ClN1C(=O)N(Cl)C(=O)N(Cl)C1=O YRIZYWQGELRKNT-UHFFFAOYSA-N 0.000 claims description 4
- 239000004830 Super Glue Substances 0.000 claims description 4
- 229950009390 symclosene Drugs 0.000 claims description 4
- 229920001971 elastomer Polymers 0.000 abstract description 20
- 239000005060 rubber Substances 0.000 abstract description 20
- 239000011324 bead Substances 0.000 description 17
- 230000000694 effects Effects 0.000 description 12
- 238000000034 method Methods 0.000 description 8
- 239000000945 filler Substances 0.000 description 5
- 229920005557 bromobutyl Polymers 0.000 description 4
- 229940053009 ethyl cyanoacrylate Drugs 0.000 description 3
- 230000003014 reinforcing effect Effects 0.000 description 3
- IJGRMHOSHXDMSA-UHFFFAOYSA-N Atomic nitrogen Chemical compound N#N IJGRMHOSHXDMSA-UHFFFAOYSA-N 0.000 description 2
- PPBRXRYQALVLMV-UHFFFAOYSA-N Styrene Chemical compound C=CC1=CC=CC=C1 PPBRXRYQALVLMV-UHFFFAOYSA-N 0.000 description 2
- UELITFHSCLAHKR-UHFFFAOYSA-N acibenzolar-S-methyl Chemical compound CSC(=O)C1=CC=CC2=C1SN=N2 UELITFHSCLAHKR-UHFFFAOYSA-N 0.000 description 2
- 125000000217 alkyl group Chemical group 0.000 description 2
- 230000015572 biosynthetic process Effects 0.000 description 2
- 125000004432 carbon atom Chemical group C* 0.000 description 2
- 229920005556 chlorobutyl Polymers 0.000 description 2
- 239000011248 coating agent Substances 0.000 description 2
- 238000000576 coating method Methods 0.000 description 2
- 239000000203 mixture Substances 0.000 description 2
- 229920000139 polyethylene terephthalate Polymers 0.000 description 2
- 239000005020 polyethylene terephthalate Substances 0.000 description 2
- 125000000101 thioether group Chemical group 0.000 description 2
- 229920002554 vinyl polymer Polymers 0.000 description 2
- 239000004677 Nylon Substances 0.000 description 1
- 229920000297 Rayon Polymers 0.000 description 1
- 239000002174 Styrene-butadiene Substances 0.000 description 1
- 238000005299 abrasion Methods 0.000 description 1
- 239000012320 chlorinating reagent Substances 0.000 description 1
- 230000000052 comparative effect Effects 0.000 description 1
- 150000001875 compounds Chemical class 0.000 description 1
- 239000000470 constituent Substances 0.000 description 1
- 229920001577 copolymer Polymers 0.000 description 1
- 229920003244 diene elastomer Polymers 0.000 description 1
- 150000002148 esters Chemical group 0.000 description 1
- 239000000835 fiber Substances 0.000 description 1
- 239000007789 gas Substances 0.000 description 1
- 239000011261 inert gas Substances 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 239000002184 metal Substances 0.000 description 1
- 229910052757 nitrogen Inorganic materials 0.000 description 1
- 229920001778 nylon Polymers 0.000 description 1
- 230000002093 peripheral effect Effects 0.000 description 1
- 239000011112 polyethylene naphthalate Substances 0.000 description 1
- 239000002964 rayon Substances 0.000 description 1
- 229920005989 resin Polymers 0.000 description 1
- 239000011347 resin Substances 0.000 description 1
- 229920000468 styrene butadiene styrene block copolymer Polymers 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
- 238000003786 synthesis reaction Methods 0.000 description 1
- 150000003568 thioethers Chemical class 0.000 description 1
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B32—LAYERED PRODUCTS
- B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
- B32B25/00—Layered products comprising a layer of natural or synthetic rubber
- B32B25/18—Layered products comprising a layer of natural or synthetic rubber comprising butyl or halobutyl rubber
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60C—VEHICLE TYRES; TYRE INFLATION; TYRE CHANGING; CONNECTING VALVES TO INFLATABLE ELASTIC BODIES IN GENERAL; DEVICES OR ARRANGEMENTS RELATED TO TYRES
- B60C19/00—Tyre parts or constructions not otherwise provided for
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60C—VEHICLE TYRES; TYRE INFLATION; TYRE CHANGING; CONNECTING VALVES TO INFLATABLE ELASTIC BODIES IN GENERAL; DEVICES OR ARRANGEMENTS RELATED TO TYRES
- B60C5/00—Inflatable pneumatic tyres or inner tubes
- B60C5/12—Inflatable pneumatic tyres or inner tubes without separate inflatable inserts, e.g. tubeless tyres with transverse section open to the rim
- B60C5/14—Inflatable pneumatic tyres or inner tubes without separate inflatable inserts, e.g. tubeless tyres with transverse section open to the rim with impervious liner or coating on the inner wall of the tyre
-
- C—CHEMISTRY; METALLURGY
- C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
- C09J—ADHESIVES; NON-MECHANICAL ASPECTS OF ADHESIVE PROCESSES IN GENERAL; ADHESIVE PROCESSES NOT PROVIDED FOR ELSEWHERE; USE OF MATERIALS AS ADHESIVES
- C09J4/00—Adhesives based on organic non-macromolecular compounds having at least one polymerisable carbon-to-carbon unsaturated bond ; adhesives, based on monomers of macromolecular compounds of groups C09J183/00 - C09J183/16
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Chemical & Material Sciences (AREA)
- Organic Chemistry (AREA)
- Adhesives Or Adhesive Processes (AREA)
- Tires In General (AREA)
- Laminated Bodies (AREA)
Abstract
The present invention addresses the problem of providing a laminate of vulcanized rubbers with excellent adhesion stability, a method for producing the laminate, and a tire comprising the laminate. The laminate of the present invention is a laminate comprising, in order, a 1 st layer made of a vulcanized rubber, an adhesive layer made of a cured product of a cyanoacrylate-based adhesive, a 2 nd layer made of a vulcanized rubber, and a sensor layer including a sensor, wherein the cured product has a softening point of 71 ℃ or higher.
Description
Technical Field
The present invention relates to a laminate, a method for producing the laminate, and a tire.
Background
Conventionally, a laminate obtained by bonding vulcanized rubbers to each other with a cyanoacrylate-based adhesive has been known (for example, patent document 1).
Prior art literature
Patent literature
Patent document 1: international publication No. 2020/022160
Disclosure of Invention
Problems to be solved by the invention
In patent document 1, an inner liner of a tire and a sensor unit are bonded by a cyanoacrylate-based adhesive (instant adhesive). In this case, intermittent load is applied between the inner liner and the sensor unit by rotation of the tire or the like.
The present inventors have studied a laminate obtained by bonding vulcanized rubbers to each other with a cyanoacrylate-based adhesive, and as a result, have found that the vulcanized rubbers may peel off when the intermittent load as described above is applied. That is, it is clear that the adhesion stability may be insufficient.
Accordingly, in view of the above-described circumstances, an object of the present invention is to provide a laminate of vulcanized rubbers excellent in adhesion stability, a method for producing the laminate, and a tire including the laminate.
Means for solving the problems
The present inventors have made intensive studies to solve the above problems, and as a result, have found that the adhesive stability is critically improved by using a substance having a softening point after curing within a specific range as a cyanoacrylate-based adhesive, and completed the present invention.
That is, the present inventors have found that the above problems can be solved by the following constitution.
(1) A laminate comprising, in order, a 1 st layer made of a vulcanized rubber, an adhesive layer made of a cured product of a cyanoacrylate-based adhesive, a 2 nd layer made of a vulcanized rubber, and a sensor layer including a sensor, wherein the cured product has a softening point of 71 ℃ or higher.
(2) The laminate according to the above (1), wherein the cyanoacrylate in the cyanoacrylate adhesive comprises an alkyl cyanoacrylate.
(3) The laminate according to the above (1) or (2), wherein the vulcanized rubber in the above layer 1 is a butyl rubber or a halogenated butyl rubber sulfide.
(4) The laminate according to any one of (1) to (3), wherein the vulcanized rubber in the layer 2 is a sulfide of at least 1 selected from the group consisting of natural rubber, isoprene rubber, butadiene rubber, styrene-butadiene rubber, butyl rubber, halogenated butyl rubber, chloroprene rubber and nitrile rubber.
(5) A method for producing a laminate, wherein the laminate of any one of (1) to (4) is obtained by bonding the 1 st layer and the 2 nd layer holding the sensor layer to each other using the cyanoacrylate-based adhesive.
(6) The method for producing a laminate according to the above (6), wherein trichloroisocyanuric acid is applied to the surface of the 1 st layer or the 2 nd layer before the 1 st layer and the 2 nd layer are bonded together with the cyanoacrylate-based adhesive.
(7) A tire comprising the laminate according to any one of (1) to (4) above.
ADVANTAGEOUS EFFECTS OF INVENTION
As described below, according to the present invention, it is possible to provide a laminate of vulcanized rubbers excellent in adhesion stability, a method for producing the laminate, and a tire including the laminate.
Drawings
FIG. 1 is a cross-sectional view of an embodiment of a laminate of the present invention.
Fig. 2 is a cross-sectional view of an embodiment of the tire of the present invention.
Fig. 3 is an enlarged view of a portion of fig. 1.
Detailed Description
Hereinafter, the laminate of the present invention, the method for producing the laminate of the present invention, and the tire of the present invention will be described.
In the present specification, the term "numerical range represented by" to "means a range including numerical values described before and after" to "as a lower limit value and an upper limit value.
The components may be used singly or in combination of 1 or 2 or more. Here, when 2 or more types of components are used in combination, the content of the components refers to the total content unless otherwise specified.
[ laminate ]
The laminate of the present invention is a laminate comprising, in order, a 1 st layer made of a vulcanized rubber, an adhesive layer made of a cured product of a cyanoacrylate-based adhesive, a 2 nd layer made of a vulcanized rubber, and a sensor layer including a sensor, wherein the cured product has a softening point of 71 ℃ or higher.
[ description of the drawings ]
First, a laminate of the present invention will be described with reference to the drawings.
FIG. 1 is a cross-sectional view of an embodiment of a laminate of the present invention.
The laminate 100 shown in fig. 1 is a laminate comprising, in order, a 1 st layer 40 made of vulcanized rubber, an adhesive layer 50 made of a cured product (softening point 71 ℃ or higher) of a cyanoacrylate-based adhesive, a 2 nd layer 60 made of vulcanized rubber, and a sensor layer 70 including a sensor.
The layers constituting the laminate of the present invention will be described below.
[ layer 1 ]
As described above, the laminate of the present invention includes the 1 st layer made of vulcanized rubber.
The 1 st layer made of vulcanized rubber is not particularly limited as long as it is a layer made of vulcanized rubber (vulcanized rubber).
The vulcanized rubber is not particularly limited, and specific examples thereof include Natural Rubber (NR), butadiene Rubber (BR), aromatic vinyl compound/conjugated diene rubber, isoprene Rubber (IR), nitrile rubber (NBR), butyl rubber (IIR), halogenated butyl rubber (for example, bromobutyl rubber (BIIR), chlorobutyl rubber (CIIR)), sulfides of Chloroprene Rubber (CR), and the like. Examples of the aromatic vinyl compound-conjugated diene copolymer rubber include styrene-butadiene rubber (SBR) and styrene/isoprene rubber.
For the reason that the effect of the present invention is more excellent, the vulcanized rubber is preferably a butyl rubber or a sulfide of halogenated butyl rubber.
[ adhesive layer ]
As described above, the laminate of the present invention includes the adhesive layer made of the cured product of the cyanoacrylate-based adhesive. The softening point of the cured product is 71 ℃ or higher.
Cyanoacrylate-based adhesive
The cyanoacrylate-based adhesive is an adhesive containing cyanoacrylate.
The cyanoacrylate is not particularly limited as long as it is an ester of cyanoacrylate.
For the reason that the effect of the present invention is more excellent, the above cyanoacrylate is preferably an alkyl cyanoacrylate (alkyl cyanoacrylate).
The number of carbon atoms of the alkyl group of the alkyl cyanoacrylate is not particularly limited, but is preferably 1 to 5, more preferably 1 to 3, still more preferably 1 to 2, and particularly preferably 2, for the reason that the effect of the present invention is more excellent. That is, for the reason that the effect of the present invention is more excellent, the alkyl cyanoacrylate is preferably methyl cyanoacrylate or ethyl cyanoacrylate, and more preferably ethyl cyanoacrylate.
The content of the cyanoacrylate in the cyanoacrylate-based adhesive is preferably 50% by mass or more, more preferably 70% by mass or more, and still more preferably 90% by mass or more, for the reason that the effect of the present invention is more excellent. The upper limit of the content of the cyanoacrylate in the cyanoacrylate-based adhesive is not particularly limited, and is 100% by mass.
< cured object >)
Cyanoacrylate adhesives generally react with moisture in the air to cure (polymerize).
(softening point)
The cured product of the cyanoacrylate-based adhesive has a softening point of 71 ℃ or higher.
For the reason that the effect of the present invention is more excellent, the softening point of the cured product is preferably 80 ℃ or higher, more preferably 90 ℃ or higher, still more preferably 100 ℃ or higher, particularly preferably 110 ℃ or higher, and most preferably 120 ℃ or higher. The upper limit of the softening point of the cured product is not particularly limited, but for the reason that the effect of the present invention is more excellent, it is preferably 200 ℃ or less, more preferably 190 ℃ or less, still more preferably 180 ℃ or less, still more preferably 170 ℃ or less, particularly preferably 160 ℃ or less, and most preferably 150 ℃ or less.
The softening point is a vicat softening temperature measured in accordance with JIS K7206.
The method for setting the softening point of the cured product to a desired range is not particularly limited, and examples thereof include a method for adjusting the number of carbon atoms of the alkyl group of the alkyl cyanoacrylate.
[ layer 2 ]
As described above, the laminate of the present invention includes the layer 2 made of vulcanized rubber.
The 2 nd layer made of vulcanized rubber is not particularly limited as long as it is a layer made of vulcanized rubber (vulcanized rubber).
Specific examples of the vulcanized rubber are the same as the layer 1, but for the reason that the effect of the present invention is more excellent, it is preferably a sulfide of at least 1 selected from the group consisting of natural rubber, isoprene rubber, butadiene rubber, styrene-butadiene rubber, butyl rubber, halogenated butyl rubber, chloroprene rubber and nitrile rubber, more preferably a sulfide of a rubber containing at least natural rubber, and still more preferably a sulfide of a mixture of natural rubber and butadiene rubber. In the case where the vulcanized rubber is a sulfide of a rubber containing a natural rubber, the content of the natural rubber is preferably 50 mass% or more, more preferably 70 mass% or more, and still more preferably 90 mass% or more, for the reason that the effect of the present invention is more excellent.
[ sensor layer ]
As described above, the laminate of the present invention includes a sensor layer including a sensor (detector).
The sensor layer preferably includes a mechanical member coated with a resin or a metal.
The sensor layer preferably includes a housing and an electronic component. The case preferably has a hollow structure, and accommodates the electronic component therein.
The electronic component is preferably configured to include a sensor, a transmitter, a receiver, a control circuit, a battery, and the like for acquiring information.
In the case where the laminate of the present invention is used in a tire, specific examples of the sensor include a temperature sensor for measuring an internal temperature, a pressure sensor for measuring an internal pressure, a sensor for detecting an abrasion amount of a tread portion, and the like.
[ method of manufacture ]
The method for producing the laminate of the present invention is not particularly limited, and examples thereof include a method in which the 1 st layer and the 2 nd layer are bonded using the cyanoacrylate-based adhesive. Here, the sensor layer is held in layer 2.
In the above method, for the reason that the effect of the present invention is more excellent, it is preferable to apply trichloroisocyanuric acid (chlorinating agent) to the surface of the 1 st layer or the 2 nd layer before bonding the 1 st layer and the 2 nd layer using the cyanoacrylate-based adhesive. Trichloroisocyanuric acid has an effect of improving adhesion.
The method for holding the sensor layer in the 2 nd layer is not particularly limited, and examples thereof include a method in which the 2 nd layer and the sensor layer are bonded with an adhesive, a method in which a vulcanized rubber container is used as the 2 nd layer and the sensor layer (for example, an electronic component including a sensor) is housed therein, and the like.
Tire
The tire of the present invention is a tire comprising the laminate of the present invention.
The tire of the present invention will be described below with reference to the drawings.
Fig. 2 is a cross-sectional view of an embodiment of the tire (pneumatic tire) of the present invention.
The tire 200 shown in fig. 2 has a tread portion 12, a shoulder portion 14, a sidewall portion 16, and a bead portion 18 as main constituent parts.
In the following description, as indicated by an arrow in fig. 2, the tire width direction refers to a direction parallel to a rotation axis (not shown) of the tire, and the tire radial direction refers to a direction orthogonal to the rotation axis. The tire circumferential direction refers to a direction in which the rotation shaft rotates about an axis serving as a center of rotation.
The tire inner side means the lower side of the tire in fig. 2 in the tire radial direction, that is, the tire inner surface side facing the cavity region R giving a predetermined internal pressure to the tire, and the tire outer side means the upper side of the tire in fig. 2, that is, the tire outer surface side opposite to the tire inner circumferential surface, which can be visually recognized by the user. The symbol CL in fig. 2 is a tire equatorial plane, which is a plane orthogonal to the rotation axis of the tire 200 and passing through the center of the tire width of the tire 200.
The tire 200 mainly includes a carcass layer 20, a belt layer 22, a belt auxiliary reinforcing layer 24, a bead core 28, a bead filler (bead filler) 30, a tread rubber layer 32 constituting the tread portion 12, a sidewall rubber layer 34 constituting the sidewall portion 16, a rim cushion rubber layer 36, and an inner liner 42 provided on the inner peripheral surface of the tire. The inner liner 42 is made of vulcanized rubber.
The bead portion 18 is provided with a pair of left and right bead cores 28 that function to fix the tire 200 to the wheel in order to fold back the carcass layer 20, and a bead filler 30 that is provided so as to contact the bead cores 28. Accordingly, the bead core 28 and the bead filler 30 are sandwiched by the main body portion 20a and the folded-back portion 20b of the carcass layer 20.
The carcass layer 20 extends in the tire width direction from a portion corresponding to the tread portion 12, through portions corresponding to the shoulder portion 14 and the sidewall portion 16, and up to the bead portion 18 to form a skeleton of the tire 200.
The carcass layer 20 is formed by arranging reinforcing cords and coating the cords with a rubber. The carcass layer 20 is folded back around a pair of left and right bead cores 28 from the tire inner side to the tire outer side, and an end portion 20e is formed in the region of the sidewall portion 16, and is made up of a main body portion 20a and a folded back portion 20b that are bounded by the bead cores 28. That is, in the present embodiment, 1 carcass layer 20 is mounted between the pair of left and right bead portions 18. The number of carcass layers 20 is not limited to 1 layer, and may be multiple layers depending on the structure and use.
The carcass layer 20 may be formed of 1 sheet or a plurality of sheets. In the case of a plurality of sheets, the carcass layer 20 has a joint (connecting portion).
The organic fiber cord of the carcass layer 20 is formed of, for example, PET (polyethylene terephthalate), polyethylene naphthalate (PEN), rayon, nylon, or the like.
As the cord coating rubber of the carcass layer 20, 1 or more rubbers selected from Natural Rubber (NR), styrene-butadiene rubber (SBR), butadiene Rubber (BR), isoprene Rubber (IR) are preferably used.
A vulcanized rubber container 62 is bonded to the inner liner 42 of the tire 200 via an adhesive layer 52. The adhesive layer 52 is an adhesive layer made of a cured product (softening point 71 ℃ or higher) of a cyanoacrylate-based adhesive. The sensor 72 is accommodated in the vulcanized rubber container 62.
Fig. 3 is an enlarged view of a portion of fig. 1.
As shown in fig. 2 to 3, the tire 200 includes a laminate 110 including, in order, a 1 st layer (inner liner 42) made of vulcanized rubber, an adhesive layer 52 made of a cured product (softening point 71 ℃ or higher) of a cyanoacrylate-based adhesive, a 2 nd layer (part of a vulcanized rubber container 62) made of vulcanized rubber, and a sensor layer (sensor 72) including a sensor.
The tire is preferably a pneumatic tire, and may be filled with inert gas such as air and nitrogen, and other gases.
Examples
The present invention will be described in further detail with reference to examples, but the present invention is not limited to these examples.
[ laminate ]
< manufacturing of laminate >
The vulcanized rubber described in column 1 of table 1 and the vulcanized rubber described in column 2 of table 1 were prepared. In addition, a sensor layer including a sensor is held in the vulcanized rubber (layer 2).
The prepared vulcanized rubber (layer 1) and vulcanized rubber (layer 2) were bonded using the adhesives described in the columns of the adhesives of table 1.
In this way, a laminate including, in order, a 1 st layer made of vulcanized rubber, an adhesive layer made of a cured product of an adhesive, a 2 nd layer made of vulcanized rubber, and a sensor layer including a sensor was obtained.
< 90 peel test >)
The obtained laminate was subjected to a 90 ° peel test to peel the layer 2 from the layer 1, and the state of failure of the peeled surface was visually confirmed.
The results are shown in table 1. MF indicates material breakage of the vulcanized rubber, and CF indicates cohesive failure of the adhesive layer. If the MF is used, the adhesion is excellent.
[ tyre ]
< manufacturing of tire >
A tire having an inner liner formed of the vulcanized rubber described in column 1 of table 1 was prepared. In addition, a container (vulcanized rubber container) formed of vulcanized rubber described in column 2 of table 1 was prepared. In addition, an electronic component including a sensor is housed in the vulcanized rubber container.
The adhesive described in the adhesive column of table 1 was applied to the prepared inner liner layer of the tire, and a vulcanized rubber container was bonded.
In this way, each tire including a laminate including a 1 st layer (inner liner) made of vulcanized rubber, an adhesive layer made of a cured product of an adhesive, a 2 nd layer (part of a vulcanized rubber container) made of vulcanized rubber, and a sensor layer (electronic component including a sensor) including a sensor, in this order, as shown in fig. 2 to 3, was obtained.
Tire running test
Each of the tires was mounted on a wheel having a rim size of 21X 9.5J, and a running test was performed by a drum tester (air pressure 120kPa, a load of 102% against a maximum load, a running speed of 81km per hour, and a running distance of 10,000 km). The state of the vulcanized rubber container after the running test was visually checked, and the adhesion stability was evaluated according to the following criteria.
The results are shown in table 1. From the viewpoint of adhesion stability, it is preferably o or Δ, and more preferably o.
O: peeling between the inner liner and the vulcanized rubber container was hardly observed.
Delta: peeling was observed between the inner liners and the vulcanized rubber container.
X: peeling between the inner liner and the vulcanized rubber container was remarkably observed.
< vulcanized rubber >)
In table 1, the vulcanized rubbers described in columns of layers 1 and 2 are as follows. BIIR: brominated butyl rubber (sulfide)
IIR: butyl rubber (sulfide)
NR/BR: natural rubber/butadiene rubber=95/5 (mass ratio) (sulfide)
NR/SBR: natural rubber/styrene-butadiene rubber=40/60 (mass ratio) (sulfide)
CR: neoprene (sulfide)
NBR: nitrile rubber (sulfide)
< adhesive >
In table 1, the adhesives described in the adhesive column are as follows.
Adhesive 1: the cured product of the adhesive (cyanoacrylate) was cured at a softening point, and the cured product was cured at a softening point, and the softening point was recorded as the same as the one of the following. 145 DEG C
Adhesive 2: the use of a bion in the field of industrial use is described as a bion 2000, a cyanoacrylate-based adhesive (ethyl cyanoacrylate), softening point of cured product, manufactured by east asia Synthesis Co., ltd.): 145 DEG C
Adhesive 3: the cured product was prepared from a 602PF, cyanoacrylate-based adhesive, manufactured by eastern synthesis corporation, and softening point: 110 DEG C
Adhesive 4: the cured product of the adhesive is prepared from a compound 802, cyanoacrylate adhesive, manufactured by eastern synthetic corporation, and has a softening point: 60 DEG C
Adhesive 5: the curable composition contains a curable adhesive (a cyanoacrylate-based adhesive) (a cyanoacrylate-based adhesive, a cured product of the company st asia, ltd.) and a cured product having a softening point: 165 DEG C
In Table 1, the column of softening points shows the softening point [. Degree.C. ] of the cured product of the adhesive.
As is clear from table 1, examples 1 to 9 using the cyanoacrylate-based adhesive having a softening point of 71 ℃ or higher after curing showed excellent adhesive stability as compared with comparative example 1 using the cyanoacrylate-based adhesive having a softening point of less than 71 ℃ after curing. Among them, examples 1 to 2 and examples 4 to 8, in which cyanoacrylate-based adhesives having softening points of 120 to 160℃after curing were used, exhibited more excellent adhesive stability.
Description of symbols
12. Tread portion
14. Shoulder portion
16. Sidewall portion
18. Bead portion
20. Carcass layer
20a body portion of carcass layer 20
20b turned-back portion of carcass layer 20
20e ends of carcass layer 20
22. Belted layer
22a inner belt
22b outer belt
22e end of belt 22
24. Auxiliary reinforcing layer for belt
28. Tire bead core
30. Bead filler
32. Tread rubber layer
34. Sidewall rubber layer
36. Rim buffer rubber layer
40 layer 1 made of vulcanized rubber
42. Inner liner layer
50. 52 adhesive layer
60 layer 2 made of vulcanized rubber
62. Vulcanized rubber container
70. Sensor layer comprising a sensor
72. Electronic component comprising a sensor
100. 110 laminate
200 tires (pneumatic tires).
Claims (7)
1. A laminate comprising, in order, a 1 st layer made of a vulcanized rubber, an adhesive layer made of a cured product of a cyanoacrylate-based adhesive, a 2 nd layer made of a vulcanized rubber, and a sensor layer including a sensor, wherein the cured product has a softening point of 71 ℃ or higher.
2. The laminate according to claim 1, wherein the cyanoacrylate in the cyanoacrylate adhesive comprises an alkyl cyanoacrylate.
3. The laminate according to claim 1 or 2, wherein the vulcanized rubber in the layer 1 is a butyl rubber or a sulfide of a halogenated butyl rubber.
4. The laminate according to any one of claims 1 to 3, wherein the vulcanized rubber in the layer 2 is a sulfide of at least 1 selected from the group consisting of natural rubber, isoprene rubber, butadiene rubber, styrene-butadiene rubber, butyl rubber, halogenated butyl rubber, chloroprene rubber and nitrile rubber.
5. A method for producing a laminate, wherein the laminate according to any one of claims 1 to 4 is obtained by bonding the 1 st layer and the 2 nd layer holding the sensor layer to each other using the cyanoacrylate-based adhesive.
6. The method for producing a laminate according to claim 5, wherein trichloroisocyanuric acid is applied to the surface of the 1 st layer or the 2 nd layer before the 1 st layer and the 2 nd layer are bonded together with the cyanoacrylate-based adhesive.
7. A tire comprising the laminate of any one of claims 1 to 4.
Applications Claiming Priority (3)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2021-140757 | 2021-08-31 | ||
| JP2021140757A JP7436871B2 (en) | 2021-08-31 | 2021-08-31 | Laminate, method for manufacturing the laminate, and tire |
| PCT/JP2022/031035 WO2023032666A1 (en) | 2021-08-31 | 2022-08-17 | Multilayer body, method for producing multilayer body, and tire |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN117881536A true CN117881536A (en) | 2024-04-12 |
Family
ID=85411113
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202280058816.2A Pending CN117881536A (en) | 2021-08-31 | 2022-08-17 | Laminate, method for producing laminate, and tire |
Country Status (3)
| Country | Link |
|---|---|
| JP (1) | JP7436871B2 (en) |
| CN (1) | CN117881536A (en) |
| WO (1) | WO2023032666A1 (en) |
Family Cites Families (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| AU2003208957A1 (en) * | 2002-02-18 | 2003-09-09 | Bridgestone/Firestone North American Tire, Llc | Attachment method for tire tag |
| JP2007099048A (en) * | 2005-10-03 | 2007-04-19 | Bridgestone Corp | Pedestal for mounting electronic component and tire with pedestal |
| EP3492289B1 (en) * | 2017-11-30 | 2021-01-06 | Hankook Tire Co., Ltd. | Container structure for attaching sensors to tires and method of manufacturing tire container structure |
| JP2019107965A (en) * | 2017-12-18 | 2019-07-04 | コンパニー ゼネラール デ エタブリッスマン ミシュラン | Tyre with noise insulation |
| JP7272362B2 (en) * | 2018-07-24 | 2023-05-12 | 横浜ゴム株式会社 | pneumatic tire |
| JP7192433B2 (en) * | 2018-11-21 | 2022-12-20 | 横浜ゴム株式会社 | pneumatic tire |
-
2021
- 2021-08-31 JP JP2021140757A patent/JP7436871B2/en active Active
-
2022
- 2022-08-17 CN CN202280058816.2A patent/CN117881536A/en active Pending
- 2022-08-17 WO PCT/JP2022/031035 patent/WO2023032666A1/en active Application Filing
Also Published As
| Publication number | Publication date |
|---|---|
| JP7436871B2 (en) | 2024-02-22 |
| JP2023034498A (en) | 2023-03-13 |
| WO2023032666A1 (en) | 2023-03-09 |
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